Charles f



(No Model.)

C. F. W. DOEHRING. FIRBPROOF CEILING.

No, 532,037. Patented Jan. 8, i895.

AUGRNEY .UNITED STATES PATENT -v "OFfIvCl-.

CHARLES niv. DOEURING, or NEW YORK, N. Y., AssIeNoR 'ro Tun', poEnRINoit VAN FIRE PnooFINo COMPANY, on siii-rn PLACE.,

siREPR'ooF cEiLiNe.

SPECIFICATION forming part of Letters Patent No. 532,037, dated January'85 1895."

Application filed September 14.1894. Serial lio-523,021.I (No modem I--'oiaJZ whom t ,may'concerm Be it known thatl, CHARLES F. lV. DOEH-R'ING, acitizen of Germany, andaresident of.

New York, in the county and'State of New 5` York, have inventedcertainvnew andnsefnl Improvements in Fireproof Ceilings, of whichf Aotheruitable material. Then a suicient fthe following is laspecification. My rinvention relatesto improvements `in ,ceilngsandconsists in a. ceiling'of anew'and ro .simple construction, by which'not alone the height, aswell, as theweight of 'the ceiling is greatlydiminished, but also the power of resistanceof'the saine is highlyincreased,

My improved ceilingV is illustrated in 'thev 15 accompanying drawings,in which Figure I' shows a cross-section and'Fig. 2 a longitudinalsection of thesa'me. Figs. Sto

7 are cross-sections of .the intermediate girdj t ers in diierentconstructions. Figs. 8 'and 9 zo are cross-sections of ceilings Ashowingthe appliances of such girders in connection with supporting wires.

gitndinal and a cross section respectively of my ceiling without theappliance of the inz 5 termedite girders,

'Similar'letters of reference indicate corre- 1 spending parte. f

- Referring to the drawings A are iron beams with lateral bottom and topflanges Wliiclare 3c vparallelly*laid onand held by the side-walls ofthe buildings in the usualmanner..

B are sheet metalgirdersof .a triangularcrosssection, the Shanks of4which may be p'rovided with inwardly or. outwardly projecting 3`5`extensions, as'shovmin Figs'. 4, 5, and 6, or may be perforated, asindicated in Figui?. These girder's are placed between jthe said beams Aand held thereon by thelower ilanges-of the same, asshown in Figs. 1 and2.' f

4o The filling mortar 'C consistsot theusual 'binding materials and isintermingled with :shortpieces of thin Wire of a length of about oneinch, which' wirefpieces have the purpose ltoimpart fte the mortar ahigher degree of 45 .firmness and consistency;

D are wires either drawn and stretchedA through the perforations ofithetriangular in-v termediate girders or simply placed upon the lateral`extensions of the Shanks ofthe same, y5o as illustrated in Figs. 8 and 9respectively.

E is a bottom-layer formed of broken stones or broken castcd or burnedtiles.

from each other. V v the intermediate gil-ders may come-in contact Figs.10 and 11 are a lonvWith the beamsA with both Shanks or in any Myimproved ceilings are'bniltin, the fai-if v lowing. manner: Upon Vthetopsnrt`ace ofthe supporting scatioid'a'laycriof broken stones '.ortilesiis vplaced and' evenly distributed therequantity of the mortar,containing the aforesaidfWire-piecee, is placed .upon the said bot'-tom-layer to combine they broken stones or `tiles with each other andto-form thus asap.

porting bottom for the ceiling; Upon the lower flanges of the' beams Athe triangular intermediategirders '13, consisting of sheetmetah as saidbefore, are then: placed in ref quired distances from each other, andthe spaces betweenl the beams and .the intermediate girders arelled upwith thebefore described mortar to a certain height, which des pends ,onthe distances the beams are laid lt may be understood that other Way andthat the spaces between the slianksof -the'girdersmay he filled withmortar `beforefthey are attached to the beams, so that they, filled insuch a manner, can be brought on the market asaspecial article of, 8p lmanufacture.

Todiminish the weight of the mortar, 'it' intermediate girders, or suchwires may be placed upon the lateral extensions of the girders andembedded in the mortar. Instead of the wiresany other suitablesupporting mate'- rial, answering thepurpose,forinstance,bandiron ormetal rods or strips of any cross-section may be used. The remainingnpper'spaces fof they ceiling are finally lled up with any respondingperforations of the Shanks of the f yknown filling material, as ashes,and when 1 the mortar has dried and binds, the supporting scaloldunderneath the ceiling is removed,

whereafter the ceiling is provided with the usual'jinishcoating'. l

press-ure upon the beams A is entirely dispensed with, the height andweight of the ceiling are greatly diminished and, in cornroo f By'niyimproved construction the lateral v z 5 termediate girders,substantially as set forth. 2. 'A ceiling yconsisting of parallelfbeamsffsf,

parisonfiri tlisueh` reduced height and weight, the; mostpossibleresistance and strength' are claim as new andl desire to secureby Letterspassesfgf-ail other knogwn constructions in re- Y gard ttosimplicity, aswell as to cheapness and v strength-"5 f Having "thusdescribed my invention, I

Patent-- Y sheet;4 metal ygirders of triangu to the said lgirders, and abinding m''rtrlll ing the spaces betweentbe said beams andvinintermediate' sheetfmetai girders. of triangular cross-sectionattached crosswise to the said "beams, and a" binding 'mortarbavingsmall wire pieces vintermingled therewithand llingy the spaces betweenmediate girders, substantially as set forth.

i 3.. A ceiling consisting of a bottomlayer of mediate `sheet-metal 1..A ceiling consisting of parallel beams, intermediate lar cross-sectionattached crosswise to the said beams,.wi're s`stretched between andattaohed the s aid beams and intertnolrenvy stones or til'esQnnarallelbean,naliniier-` 'girders of triangular crloss-s`actionattached:crosswiseV to the said '.beams, and `al binding mortar havingsmall y wire-piecesintermingledtherewith andjllng the spaces between-thesaidbeams and intermediateigirders,'substantially as set forth.

'-4.' Aceilingconsisting of a bottom layer of broken stones ortemberglSS-L. a' l i 'l 0111A.miasy F., DOEHRING. Witnesses: y y* Y ALB.vos DEN DRinscH, .g CHARLES KARP.

i tiles,.pral lel beams, interv `mediate sheet-inefal girders oftriangular lforo ss-s'action ence oftwo witnesses, this' lltnday ofSep-v

